A Twistor Approach to One-Loop Amplitudes in N=1 Supersymmetric Yang-Mills Theory

Preprint

28 October 2004

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.hep-th/0410280

Abstract

We extend the twistor string theory inspired formalism introduced in hep-th/0407214 for calculating loop amplitudes in N=4 super Yang-Mills theory to the case of N=1 (and N=2) super Yang-Mills. Our approach yields a novel representation of the gauge theory amplitudes as dispersion integrals, which are surprisingly simple to evaluate. As an application we calculate one-loop maximally helicity violating (MHV) scattering amplitudes with an arbitrary number of external legs. The result we obtain agrees precisely with the expressions for the N=1 MHV amplitudes derived previously by Bern, Dixon, Dunbar and Kosower using the cut-constructibility approach.

Keywords

All Related Versions

Version 1, 2004-10-28, ArXiv
Published version: Nuclear Physics B, 706 (1-2), 100.

This publication has 0 references indexed in Scilit: